The findings, published in The Astrophysical Journal, reveal new details about the star's size, appearance, and characteristics. Polaris, a Cepheid variable star, is the brightest member of a ...

In commemoration of Edwin Hubble's discovery of a Cepheid variable class star, called V1, in the neighboring Andromeda galaxy 100 years ago, astronomers partnered with the American Association of ...

Leavitt realized that with cepheid variable stars (which change brightness with great regularity), there is a direct correlation between a star's magnitude (degree of brightness) and the length of ...

Around 1924, Hubble was looking at the Andromeda nebula and found to his amazement that one of the stars he'd observed wasn't just any star, but a cepheid variable. In 1912 Henrietta Leavitt had ...

At the Harvard College Observatory in years around 1900, women were hired to make measurements of astronomical data and do ...

Answer: For near stars, astronomers use a method called parallax. During Earth’s orbit, near stars seem to shift their position against the farther stars. This is called parallax shift. By ...

The range is typically a magnitude, in V. Its spectrum and variability, which earlier were those of a Cepheid, are now those of a red semiregular variable. The star’s behavior is consistent with a ...

Polaris is classified as a Cepheid variable, a type of star that astronomers use as a "standard candle" to measure cosmic ...